Citation:
LI Xia, LIANG Yan. Photochromism of the Ternary System, Containing Lanthanide Ion, N,N-Bis(2-pyrrolidone-1-methylene)-β-alanine and o-Phenathroline[J]. Chinese Journal of Applied Chemistry,
;2003, 20(12): 1196-1199.
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The RE3+-N,N-bis(2-pyrrolidone-1-methylene)-β-alanine(PMA)-o-phenathroline(phen) ternary systems were prepared. The ternary systems were found to exhibit photochromic property. Under illumination of sunlight or mercury arc lamp in an aqueous solution their color could change from yellow to green and faded back to the original yellow color, when the illumination was shutting down. The effect of pH value of the aqueous solution on the photochromism of the system has been investigated in relation with the excitation, emission of the Eu3+-PMA-phen system and absorption spectra of the Dy3+-PMA-phen system.
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